*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ── CSS Theme Variables ───────────────────────────────────── */
:root, [data-theme="light"] {
  --bg-color: #f1f4f9;
  --card-bg: #ffffff;
  --card-bg-subtle: #f8fafc;
  --card-bg-translucent: rgba(255, 255, 255, 0.88);
  --text-main: #1f2937;
  --text-muted: #5f6368;
  --text-subtle: #9aa0a6;
  --border-color: rgba(0, 0, 0, 0.08);
  --border-color-hover: rgba(0, 0, 0, 0.16);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.10), 0 2px 6px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 16px 36px rgba(0, 0, 0, 0.14), 0 4px 12px rgba(0, 0, 0, 0.06);
  --btn-primary-bg: #8f1537;
  --btn-primary-hover: #6f102a;
  --btn-primary-text: #ffffff;
  --btn-secondary-bg: #f1f3f4;
  --btn-secondary-hover: #e8eaed;
  --btn-secondary-text: #3c4043;
  --input-bg: #ffffff;
  --input-border: #dadce0;
  --input-text: #202124;
  --map-filter: none;
  --chip-bg: #ffffff;
  --chip-text: #3c4043;
  --chip-border: rgba(0, 0, 0, 0.08);
  --chip-active-bg: #e8f0fe;
  --chip-active-text: #6f102a;
  --chip-active-border: #8f1537;
  --bottomnav-bg: rgba(255, 255, 255, 0.92);
  --bottomnav-border: rgba(0, 0, 0, 0.08);
  --bottomnav-item: #5f6368;
  --bottomnav-item-active: #8f1537;
  --fab-bg: #ffffff;
  --fab-color: #1f2937;
}

[data-theme="dark"] {
  --bg-color: #f1f4f9;
    --card-bg: #ffffff;
    --card-bg-subtle: #f8fafc;
    --card-bg-translucent: rgba(255, 255, 255, 0.88);
    --text-main: #1f2937;
    --text-muted: #5f6368;
    --text-subtle: #9aa0a6;
    --border-color: rgba(0, 0, 0, 0.08);
    --border-color-hover: rgba(0, 0, 0, 0.16);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.10), 0 2px 6px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 16px 36px rgba(0, 0, 0, 0.14), 0 4px 12px rgba(0, 0, 0, 0.06);
    --btn-primary-bg: #8f1537;
    --btn-primary-hover: #6f102a;
    --btn-primary-text: #ffffff;
    --btn-secondary-bg: #f1f3f4;
    --btn-secondary-hover: #e8eaed;
    --btn-secondary-text: #3c4043;
    --input-bg: #ffffff;
    --input-border: #dadce0;
    --input-text: #202124;
    --map-filter: none;
    --chip-bg: #ffffff;
    --chip-text: #3c4043;
    --chip-border: rgba(0, 0, 0, 0.08);
    --chip-active-bg: #e8f0fe;
    --chip-active-text: #6f102a;
    --chip-active-border: #8f1537;
    --bottomnav-bg: rgba(255, 255, 255, 0.92);
    --bottomnav-border: rgba(0, 0, 0, 0.08);
    --bottomnav-item: #5f6368;
    --bottomnav-item-active: #8f1537;
    --fab-bg: #ffffff;
    --fab-color: #1f2937;
}

/* ── Base ───────────────────────────────────────────────────── */
html, body {
  height: 100%;
  width: 100%;
  overflow: hidden;
  background-color: var(--bg-color);
  color: var(--text-main);
  transition: background-color 0.25s ease, color 0.25s ease;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

body {
  display: block;
  position: fixed;
  inset: 0;
  user-select: none;
  -webkit-user-select: none;
}

/* ── App Shell (Mobile / Map Viewport) ───────────────────────── */
.app-shell {
  position: relative;
  width: 100%;
  height: 100%;
  height: 100dvh;
  overflow: hidden;
  background: var(--bg-color);
}


/* ── Center Full-Screen Map ─────────────────────────────────── */
.main-content {
  position: absolute !important;
  inset: 0 !important;
  width: 100% !important;
  height: 100% !important;
  display: flex !important;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--bg-color);
  z-index: 10;
}

.image-wrapper {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 0;
  box-shadow: none;
}

.map-container {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-user-drag: none;
  cursor: grab;
  /* Seamless Google-Maps-style ground: the plan is drawn directly on the
     page surface — no letterbox, no map edge, in both themes. */
  background: var(--bg-color);
}

.map-container.is-panning,
.map-container:active {
  cursor: grabbing;
}

.map-pan-stage {
  position: relative;
  width: 100%;
  height: 100%;
  transform-origin: 0 0;
  cursor: grab;
  line-height: 0;
}

.map-pan-stage.is-panning {
  cursor: grabbing;
}

.floor-layer {
  display: none;
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.floor-layer.active {
  display: block;
}

.central-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  pointer-events: none;
  -webkit-user-drag: none;
  user-drag: none;
  user-select: none;
  -webkit-user-select: none;
  shape-rendering: geometricPrecision;
  text-rendering: geometricPrecision;
}

[data-theme="dark"] .central-image {
  filter: var(--map-filter);
}

/* ── Google-Maps-style basemap ─────────────────────────────────
   No background slab: the plan is drawn straight onto the page ground,
   so there is no visible "map image" rectangle. White corridors with
   their grey casings read as streets; rooms read as map polygons. */
.central-image .floorplan-bg {
  fill: transparent;
}

.central-image .room-wall {
  /* Softer, map-like polygons instead of hard CAD rectangles */
  rx: 3px;
  stroke-width: 1.25;
}

.selection-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  shape-rendering: geometricPrecision;
  text-rendering: geometricPrecision;
}

/* ── Floating Top Bar (Google Maps style) ────────────────────── */
.floating-top-bar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  padding: 12px 14px 0;
  padding-top: max(12px, env(safe-area-inset-top));
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
  max-width: 680px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .floating-top-bar {
    padding-top: 20px;
  }
}

.floating-top-bar > * {
  pointer-events: auto;
}

/* Search Row */
.search-row {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
}

.classroom-search-container {
  position: relative;
  flex: 1;
  width: 100%;
}

.floating-search-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 9999px;
  padding: 12px 16px 12px 18px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.floating-search-bar:focus-within {
  border-color: #8f1537;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15), var(--shadow);
}

.search-icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  flex-shrink: 0;
}

.classroom-search-input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: 16px;
  font-weight: 500;
  font-family: inherit;
  color: var(--text-main);
  min-width: 0;
}

.classroom-search-input::placeholder {
  color: var(--text-subtle);
  font-weight: 400;
}

.classroom-search-clear {
  background: none;
  border: none;
  color: var(--text-subtle);
  cursor: pointer;
  font-size: 15px;
  line-height: 1;
  padding: 4px 6px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.15s ease;
}

.classroom-search-clear:hover {
  color: var(--text-muted);
}

/* Autocomplete Suggestions */
.classroom-search-suggestions {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  z-index: 60;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  box-shadow: var(--shadow-lg);
  max-height: 300px;
  overflow-y: auto;
  padding: 8px;
  text-align: left;
}

.suggestion-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-radius: 12px;
  cursor: pointer;
  transition: background-color 0.15s ease;
  font-size: 14px;
  gap: 10px;
}

.suggestion-item:hover,
.suggestion-item.active {
  background: var(--card-bg-subtle);
}

.suggestion-room-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.suggestion-room-name {
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.suggestion-room-code {
  font-size: 12px;
  color: var(--text-muted);
}

.suggestion-floor-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 9999px;
  background: var(--card-bg-subtle);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  white-space: nowrap;
  flex-shrink: 0;
}

.suggestion-floor-badge.floor-ground {
  background: #dbeafe;
  color: #1d4ed8;
  border-color: rgba(29, 78, 216, 0.25);
}
.suggestion-floor-badge.floor-first {
  background: #e0e7ff;
  color: #4338ca;
  border-color: rgba(67, 56, 202, 0.25);
}
.suggestion-floor-badge.floor-second {
  background: #f3e8ff;
  color: #7e22ce;
  border-color: rgba(126, 34, 206, 0.25);
}
.suggestion-floor-badge.floor-third {
  background: #fce7f3;
  color: #be185d;
  border-color: rgba(190, 24, 93, 0.25);
}

.classroom-search-feedback {
  font-size: 12px;
  font-weight: 600;
  color: #dc2626;
  margin-top: 6px;
  text-align: center;
  animation: searchFeedbackFade 0.2s ease-out;
  background: var(--card-bg);
  border-radius: 8px;
  padding: 6px 12px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

@keyframes searchFeedbackFade {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Category & Floor Chips Row (matches screenshot) ────────── */
.chips-row {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  padding: 2px 2px 6px;
}

.chips-row::-webkit-scrollbar {
  display: none;
}

.floor-chip,
.category-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--chip-bg);
  border: 1px solid var(--chip-border);
  border-radius: 12px;
  padding: 7px 14px 7px 8px;
  font-size: 13.5px;
  font-weight: 600;
  font-family: inherit;
  color: var(--chip-text);
  cursor: pointer;
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  user-select: none;
  flex-shrink: 0;
}

.floor-chip:hover,
.category-chip:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow);
  border-color: var(--border-color-hover);
}

.floor-chip:active,
.category-chip:active {
  transform: translateY(0);
}

.floor-chip.active,
.floor-chip[aria-selected="true"],
.category-chip.active {
  background: var(--chip-active-bg);
  border-color: var(--chip-active-border);
  color: var(--chip-active-text);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
}

/* Icon badge boxes inside chips (like Restaurants, Gas, Coffee in screenshot) */
.chip-badge {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
  transition: all 0.18s ease;
}

.chip-badge-blue   { background: #e0edff; color: #1a73e8; }
.chip-badge-indigo { background: #ede9fe; color: #6366f1; }
.chip-badge-purple { background: #f3e8ff; color: #9333ea; }
.chip-badge-pink   { background: #fce7f3; color: #db2777; }
.chip-badge-amber  { background: #fef3c7; color: #d97706; }
.chip-badge-teal   { background: #ccfbf1; color: #0d9488; }
.chip-badge-rose   { background: #ffe4e6; color: #e11d48; }
.chip-badge-green  { background: #dcfce7; color: #16a34a; }

[data-theme="dark"] .chip-badge-blue   { background: rgba(59, 130, 246, 0.20); color: #93c5fd; }
[data-theme="dark"] .chip-badge-indigo { background: rgba(99, 102, 241, 0.20); color: #a5b4fc; }
[data-theme="dark"] .chip-badge-purple { background: rgba(147, 51, 234, 0.20); color: #d8b4fe; }
[data-theme="dark"] .chip-badge-pink   { background: rgba(219, 39, 119, 0.20); color: #f472b6; }
[data-theme="dark"] .chip-badge-amber  { background: rgba(217, 119, 6, 0.20);  color: #fcd34d; }
[data-theme="dark"] .chip-badge-teal   { background: rgba(13, 148, 136, 0.20); color: #5eead4; }
[data-theme="dark"] .chip-badge-green  { background: rgba(22, 163, 74, 0.20);  color: #86efac; }
[data-theme="dark"] .chip-badge-rose   { background: rgba(225, 29, 72, 0.20);  color: #fda4af; }

.chip-label {
  letter-spacing: -0.01em;
}

/* ── Route Planning Bar (expandable panel) ──────────────────── */
.ground-nav-bar {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 8px;
  pointer-events: auto;
  animation: navBarFade 0.25s ease-out;
}

/* ── Route Planner Toggle (icon → dropdown) ──────────────────── */
.nav-toggle-btn {
  align-self: flex-start;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  border: 1px solid var(--border-color);
  background: var(--card-bg-translucent);
  color: var(--btn-primary-bg);
  cursor: pointer;
  pointer-events: auto;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
}
.nav-toggle-btn:hover {
  transform: translateY(-1px);
  background: var(--card-bg);
}
.nav-toggle-btn.active {
  background: var(--chip-active-bg);
  color: var(--chip-active-text);
}
.nav-control-group.collapsed {
  display: none;
}

/* ── Staircase climb popup ───────────────────────────────────── */
.stair-popup {
  position: fixed;
  top: clamp(180px, 30vh, 320px);
  left: 50%;
  transform: translateX(-50%);
  z-index: 260;
  min-width: 290px;
  max-width: min(430px, calc(100vw - 40px));
  padding: 24px 28px 20px;
  border-radius: 18px;
  background: var(--card-bg-translucent);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  text-align: center;
  pointer-events: auto;
  animation: stairPop 0.32s cubic-bezier(0.2, 0.9, 0.3, 1.15);
}
@keyframes stairPop {
  from { opacity: 0; transform: translateX(-50%) translateY(16px) scale(0.95); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0) scale(1); }
}
.stair-popup-icon {
  font-size: 42px;
  line-height: 1;
  margin-bottom: 10px;
}
.stair-popup-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  margin: 0 0 6px;
}
.stair-popup-sub {
  font-size: 13.5px;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.45;
}
.stair-popup-close {
  position: absolute;
  top: 10px;
  right: 12px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: none;
  background: var(--btn-secondary-bg);
  color: var(--btn-secondary-text);
  cursor: pointer;
  font-size: 13px;
  line-height: 1;
}

/* Mobile: the climb prompt becomes a bottom sheet above the floor
   switcher + Locate Me button so it never hides behind the floating
   controls on small screens. */
@media (max-width: 640px) {
  .stair-popup {
    top: auto;
    bottom: 300px;
    left: 12px;
    right: 12px;
    transform: none;
    min-width: 0;
    max-width: none;
    padding: 18px 20px 16px;
    animation-name: stairPopMobile;
  }
  .stair-popup-title {
    font-size: 18px;
  }
  .floor-switch-list {
    padding: 6px;
    gap: 4px;
  }
  .floor-switch-list .chip-label {
    font-size: 12.5px;
  }
}
@keyframes stairPopMobile {
  from { opacity: 0; transform: translateY(16px) scale(0.96); }
  to   { opacity: 1; transform: none; }
}

@keyframes navBarFade {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.nav-control-group {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  padding: 8px 12px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.nav-select-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  flex: 1;
  min-width: 0;
}

/* ── Multi-stop "Via" rows in the route planner ────────────── */
/* display: contents lets each stop row flow directly inside the
   nav-control-group flex row (stacked full-width on mobile). */
.nav-stops-container {
  display: contents;
}

.nav-stop-row .nav-label {
  color: #d97706;
}

.nav-stop-remove {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1;
  padding: 6px;
  margin-left: 2px;
  cursor: pointer;
  flex-shrink: 0;
  border-radius: 8px;
}

.nav-stop-remove:hover {
  color: #e11d48;
  background: rgba(225, 29, 72, 0.10);
}

.nav-add-stop-btn {
  width: 30px;
  font-size: 15px;
}

.nav-icon {
  font-size: 14px;
  margin-right: 6px;
  flex-shrink: 0;
}

.nav-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  margin-right: 8px;
  flex-shrink: 0;
  user-select: none;
  cursor: pointer;
}

.nav-select {
  width: 100%;
  padding: 8px 12px;
  font-size: 13.5px;
  font-weight: 500;
  font-family: inherit;
  color: var(--text-main);
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 9999px;
  outline: none;
  cursor: pointer;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
  transition: border-color 0.15s ease;
}

.nav-select:focus {
  border-color: #2563eb;
  background: var(--card-bg);
}

.nav-input-container {
  position: relative;
  display: flex;
  align-items: center;
  flex: 1;
  min-width: 0;
}

.nav-search-input {
  width: 100%;
  padding: 8px 30px 8px 12px;
  font-size: 13.5px;
  font-weight: 500;
  font-family: inherit;
  color: var(--text-main);
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 9999px;
  outline: none;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.nav-search-input:focus {
  border-color: #f9c51a;
  background: var(--card-bg);
  box-shadow: 0 0 0 2px #cfa51a;
}

.nav-input-clear {
  position: absolute;
  right: 8px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--card-bg-subtle);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  line-height: 1;
  transition: all 0.15s ease;
  z-index: 2;
}

.nav-input-clear:hover {
  background: var(--border-color);
  color: var(--text-main);
}

.nav-suggestions-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  width: 100%;
  min-width: 280px;
  max-width: 380px;
  max-height: 260px;
  overflow-y: auto;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  z-index: 100;
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  animation: navDropdownFade 0.15s ease-out;
}

@keyframes navDropdownFade {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.nav-suggestion-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.12s ease;
  user-select: none;
}

.nav-suggestion-item:hover,
.nav-suggestion-item.active {
  background: var(--card-bg-subtle);
}

.nav-suggestion-icon {
  font-size: 16px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
}

.nav-suggestion-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.nav-suggestion-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-suggestion-sub {
  font-size: 11px;
  color: var(--text-muted);
}

.nav-suggestion-badge {
  font-size: 10.5px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 9999px;
  background: var(--chip-active-bg);
  color: var(--chip-active-text);
  border: 1px solid var(--chip-active-border);
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-suggestion-empty {
  padding: 14px;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
}

.nav-swap-btn {
  background: var(--card-bg-subtle);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 15px;
  flex-shrink: 0;
  transition: all 0.15s ease;
}

.nav-swap-btn:hover {
  background: var(--btn-secondary-hover);
  color: var(--text-main);
}

.nav-btn {
  padding: 8px 18px;
  font-size: 13.5px;
  font-weight: 600;
  font-family: inherit;
  border-radius: 9999px;
  cursor: pointer;
  flex-shrink: 0;
  transition: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  user-select: none;
  border: 1px solid transparent;
}

.nav-btn.primary {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  border-color: var(--btn-primary-bg);
}

.nav-btn.primary:hover {
  background: var(--btn-primary-hover);
  transform: translateY(-1px);
}

.nav-btn.secondary {
  background: var(--btn-secondary-bg);
  color: var(--btn-secondary-text);
  border-color: var(--border-color);
}

.nav-btn.secondary:hover {
  background: var(--btn-secondary-hover);
  color: var(--text-main);
}

/* Route Summary Bar */
.route-summary-bar {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  background:#f4f4f4;
  border: 1px solid rgba(37, 99, 235, 0.30);
  color: #8f1537;
  padding: 8px 16px;
  border-radius: 14px;
  font-size: 12.5px;
  font-weight: 600;
  animation: navBarFade 0.2s ease-out;
}

/* ── Turn-by-turn directions ── */
.route-directions {
  list-style: none;
  margin: 2px 0 0;
  padding: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: 190px;
  overflow-y: auto;
}

.route-direction {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 10px;
  border-radius: 8px;
  background: var(--card-bg);
  border: 1px solid rgba(37, 99, 235, 0.22);
  font-size: 12px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.route-direction:hover {
  border-color: #60a5fa;
}

.route-direction-text {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.route-direction.turn-left .route-direction-text::before {
  content: '⬅';
  font-size: 13px;
}

.route-direction.turn-right .route-direction-text::before {
  content: '➡';
  font-size: 13px;
}

.route-direction.stair .route-direction-text::before {
  content: '🚶';
  font-size: 13px;
}

.route-direction.arrive {
  border-color: #34d399;
  background: rgba(16, 185, 129, 0.12);
  color: #059669;
}

.route-direction.arrive .route-direction-text::before {
  content: '📍';
  font-size: 13px;
}

.route-direction.current {
  background: #2563eb;
  border-color: #1d4ed8;
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.35);
}

.route-direction.current.arrive {
  background: #059669;
  border-color: #047857;
  color: #ffffff;
}

.route-direction-dist {
  flex-shrink: 0;
  font-size: 11px;
  font-weight: 700;
  opacity: 0.75;
}

/* Compact guidance chip shown beside the minimized panel icon; the current
   instruction (or a wrong-way / off-route warning) stays visible while the
   user walks. */
.route-step-now {
  display: none;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 9999px;
  background: rgba(15, 23, 42, 0.88);
  border: 1px solid rgba(59, 130, 246, 0.45);
  color: #e2e8f0;
  font-size: 12px;
  font-weight: 600;
  max-width: 340px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  animation: navBarFade 0.2s ease-out;
}

.route-summary-bar.minimized .route-step-now {
  display: inline-flex;
}

.route-step-now.warning {
  background: #dc2626;
  border-color: #b91c1c;
  color: #ffffff;
}

/* ── Washroom gender choice popover ── */
.washroom-choice-pop {
  position: fixed;
  top: 150px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 950;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  background: var(--card-bg);
  border: 1px solid rgba(37, 99, 235, 0.3);
  border-radius: 14px;
  padding: 14px 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  animation: navBarFade 0.15s ease-out;
}

.washroom-choice-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-main);
}

.washroom-choice-options {
  display: flex;
  gap: 10px;
}

.washroom-option {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 10px;
  border: 1.5px solid;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.washroom-option:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.washroom-option.mens {
  background: #dbeafe;
  border-color: #2563eb;
  color: #1d4ed8;
}

.washroom-option.ladies {
  background: #fce7f3;
  border-color: #db2777;
  color: #be185d;
}

[data-theme="dark"] .washroom-option.mens {
  background: rgba(37, 99, 235, 0.22);
  color: #93c5fd;
}

[data-theme="dark"] .washroom-option.ladies {
  background: rgba(219, 39, 119, 0.2);
  color: #f9a8d4;
}

.washroom-cancel {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 12px;
  cursor: pointer;
  font-family: inherit;
}

.washroom-cancel:hover {
  color: var(--text-main);
}

/* ── Nearby facilities dropdown menu ── */
.nearby-menu {
  position: fixed;
  z-index: 950;
  display: none;
  flex-direction: column;
  min-width: 200px;
  background: var(--card-bg);
  border: 1px solid rgba(37, 99, 235, 0.3);
  border-radius: 12px;
  padding: 6px;
  gap: 2px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  animation: navBarFade 0.15s ease-out;
}

.nearby-menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  border: none;
  background: transparent;
  color: var(--text-main);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  transition: background 0.12s ease;
}

.nearby-menu-item:hover {
  background: rgba(37, 99, 235, 0.12);
}

[data-theme="dark"] .nearby-menu-item:hover {
  background: rgba(59, 130, 246, 0.18);
}

.nearby-menu-icon {
  font-size: 15px;
  line-height: 1;
}

.nearby-chevron {
  transition: transform 0.15s ease;
}

.category-chip.open .nearby-chevron {
  transform: rotate(180deg);
}

[data-theme="dark"] .route-summary-bar {
  background: rgba(59, 130, 246, 0.16);
  border-color: rgba(59, 130, 246, 0.35);
  color: #93c5fd;
}

.route-summary-details {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

/* Minimized state: the whole bar shrinks into a small tappable icon */
.route-summary-bar.minimized {
  padding: 0;
  gap: 0;
  background: transparent;
  border-color: transparent;
  box-shadow: none;
}

.route-summary-bar.minimized:hover {
  background: transparent;
}

.route-summary-icon {
  display: none;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 9999px;
  background: #2563eb;
  border: 1px solid #1d4ed8;
  color: #ffffff;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 3px 10px rgba(37, 99, 235, 0.45);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  font-family: inherit;
  animation: navBarFade 0.2s ease-out;
}

.route-summary-bar.minimized .route-summary-icon {
  display: inline-flex;
}

.route-summary-bar.minimized .route-summary-details,
.route-summary-bar.minimized .route-summary-minimize {
  display: none;
}

.route-summary-icon:hover {
  transform: translateY(-1px) scale(1.04);
  box-shadow: 0 5px 14px rgba(37, 99, 235, 0.55);
}

.route-summary-icon:active {
  transform: scale(0.96);
}

.route-summary-icon-text {
  white-space: nowrap;
}

[data-theme="dark"] .route-summary-icon {
  background: #6f102a;
  border-color: #8f1537;
}

.route-summary-minimize {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  padding: 0;
  border-radius: 9999px;
  background: var(--card-bg);
  border: 1px solid rgba(37, 99, 235, 0.35);
  color: #1d4ed8;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.15s ease;
  flex-shrink: 0;
}

.route-summary-minimize:hover {
  background: #dbeafe;
  transform: translateY(-1px);
}

[data-theme="dark"] .route-summary-minimize {
  background: var(--card-bg-subtle);
  border-color: rgba(59, 130, 246, 0.4);
  color: #93c5fd;
}

.route-metrics-group {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.route-floor-steps {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

.route-floor-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 9999px;
  background: var(--card-bg);
  border: 1px solid #93c5fd;
  color: #1d4ed8;
  font-size: 11.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: inherit;
}

[data-theme="dark"] .route-floor-pill {
  background: var(--card-bg-subtle);
  color: #93c5fd;
  border-color: rgba(59, 130, 246, 0.4);
}

.route-floor-pill:hover {
  background: #dbeafe;
  border-color: #60a5fa;
  transform: translateY(-1px);
}

.route-floor-pill.active {
  background: #2563eb;
  border-color: #1d4ed8;
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(37, 99, 235, 0.35);
}

.route-step-arrow {
  color: var(--text-muted);
  font-size: 11px;
  font-weight: bold;
}

.route-stair-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 9999px;
  background: #fef3c7;
  border: 1px solid #fcd34d;
  color: #b45309;
  font-size: 11px;
  font-weight: 600;
}

[data-theme="dark"] .route-stair-badge {
  background: rgba(254, 243, 199, 0.1);
  border-color: rgba(252, 211, 77, 0.4);
  color: #fcd34d;
}

.route-instruction-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  padding: 6px 12px;
  font-size: 12px;
  color: #0369a1;
  background: #e0f2fe;
  border-radius: 8px;
  border: 1px solid #bae6fd;
}

[data-theme="dark"] .route-instruction-bar {
  color: #7dd3fc;
  background: rgba(3, 105, 161, 0.14);
  border-color: rgba(186, 230, 253, 0.2);
}

/* ── Floating Navigation Arrow FAB (Bottom-Right, matches screenshot) */
.nav-fab {
  position: absolute;
  right: 16px;
  bottom: 24px;
  z-index: 45;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
  pointer-events: auto;
}

/* ── Floor Switcher (vertical box above the Locate Me FAB) ───── */
.floor-switch-list {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 6px;
  padding: 8px;
  border-radius: 16px;
  background: var(--card-bg-translucent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow);
}
.floor-switch-list .floor-chip {
  width: 100%;
  justify-content: flex-start;
  box-shadow: none;
  background: transparent;
}
.floor-switch-list .floor-chip:hover {
  transform: none;
  background: var(--chip-bg);
}
.floor-switch-list .floor-chip.active,
.floor-switch-list .floor-chip[aria-selected="true"] {
  background: var(--chip-active-bg);
}

.nav-arrow-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  border-radius: 18px; /* Squircle matching screenshot */
  background: var(--fab-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  color: var(--fab-color);
  border: 1px solid var(--border-color);
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  user-select: none;
  font-family: inherit;
}

.nav-arrow-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-color-hover);
}

.nav-arrow-btn:active {
  transform: translateY(0);
}

.nav-arrow-btn.active {
  background: var(--fab-bg);
  border-color: #1a73e8;
  box-shadow: 0 4px 18px rgba(26, 115, 232, 0.35);
}

.gps-locate-icon {
  flex-shrink: 0;
  display: block;
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-arrow-btn:hover .gps-locate-icon {
  transform: scale(1.08);
}

.nav-arrow-btn.locating .gps-icon-halo {
  animation: gpsLocateHaloPulse 1.4s ease-in-out infinite;
}

@keyframes gpsLocateHaloPulse {
  0%   { r: 9;  fill-opacity: 0.35; }
  50%  { r: 12; fill-opacity: 0.10; }
  100% { r: 9;  fill-opacity: 0.35; }
}

.nav-arrow-btn.locating .gps-icon-core {
  animation: gpsLocateCorePulse 1.4s ease-in-out infinite;
}

@keyframes gpsLocateCorePulse {
  0%   { transform: scale(1);    transform-origin: 12px 12px; }
  50%  { transform: scale(0.85); transform-origin: 12px 12px; }
  100% { transform: scale(1);    transform-origin: 12px 12px; }
}

/* ── Zoom Controls (Discreet bottom-left) ───────────────────── */
.map-zoom-controls {
  position: absolute;
  left: 16px;
  bottom: 24px;
  z-index: 45;
  display: inline-flex;
  flex-direction: column;
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  user-select: none;
  line-height: normal;
  pointer-events: auto;
}

.map-zoom-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
  font-size: 20px;
  font-weight: 500;
  cursor: pointer;
  line-height: 1;
  transition: background-color 0.15s ease, color 0.15s ease;
  font-family: inherit;
}

.map-zoom-btn:last-child {
  border-bottom: none;
}

.map-zoom-btn.reset {
  font-size: 15px;
}

.map-zoom-btn:hover {
  background: var(--card-bg-subtle);
  color: #1a73e8;
}

.map-zoom-btn:active {
  background: var(--btn-secondary-hover);
}

/* ── SVG Selectable Rooms ───────────────────────────────────── */
.route-layer      { pointer-events: none; }
.route-stair-pin  { pointer-events: none; filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.35)); }

.route-glow-polyline {
  fill: none;
  stroke: rgba(225, 29, 72, 0.35);
  stroke-width: 14;
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: none;
}

.route-core-polyline {
  fill: none;
  stroke: #e11d48;
  stroke-width: 4.5;
  stroke-dasharray: 8, 8;
  stroke-linecap: round;
  stroke-linejoin: round;
  animation: routeDash 1s linear infinite;
  pointer-events: none;
}

@keyframes routeDash {
  to { stroke-dashoffset: -16; }
}

/* Multi-stop trip: remaining legs previewed as faint dashed amber paths */
.route-future-polyline {
  fill: none;
  stroke: rgba(245, 158, 11, 0.45);
  stroke-width: 3.5;
  stroke-dasharray: 4, 7;
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: none;
}

.route-trip-pill {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 9999px;
  background: rgba(245, 158, 11, 0.16);
  color: #fbbf24;
  font-size: 11.5px;
  font-weight: 700;
  white-space: nowrap;
}

.route-direction.trip-stop {
  color: #fbbf24;
  font-style: italic;
  list-style: none;
  border-top: 1px dashed rgba(245, 158, 11, 0.35);
  margin-top: 4px;
  padding-top: 8px;
}

.route-waypoint-dot {
  fill: var(--card-bg);
  stroke: #e11d48;
  stroke-width: 2;
  pointer-events: none;
}

.route-pin {
  pointer-events: none;
  filter: drop-shadow(0 2px 5px rgba(0, 0, 0, 0.3));
}

.selectable-room {
  pointer-events: auto;
  cursor: pointer;
  fill: transparent;
  stroke: transparent;
  stroke-width: 2px;
}

.selectable-room:hover {
  fill: rgba(37, 99, 235, 0.16);
  stroke: rgba(37, 99, 235, 0.65);
  stroke-width: 3px;
}

.selectable-room.selected,
.selectable-room[aria-pressed="true"] {
  fill: rgba(37, 99, 235, 0.35);
  stroke: #1d4ed8;
  stroke-width: 4px;
  filter: drop-shadow(0 0 6px rgba(29, 78, 216, 0.6));
}

.selectable-room.selected:hover,
.selectable-room[aria-pressed="true"]:hover {
  fill: rgba(37, 99, 235, 0.42);
  stroke: #1e40af;
  stroke-width: 4.5px;
}

.selectable-room.search-highlighted {
  fill: rgba(37, 99, 235, 0.5) !important;
  stroke: #1d4ed8 !important;
  stroke-width: 5px !important;
  filter: drop-shadow(0 0 10px rgba(37, 99, 235, 0.85)) !important;
  animation: roomSearchPulse 1.2s ease-in-out infinite alternate !important;
}

@keyframes roomSearchPulse {
  0%   { fill: rgba(37, 99, 235, 0.35); stroke-width: 4px;   filter: drop-shadow(0 0 6px rgba(37, 99, 235, 0.7)); }
  100% { fill: rgba(37, 99, 235, 0.65); stroke-width: 6.5px; filter: drop-shadow(0 0 16px rgba(37, 99, 235, 1)); }
}

/* Specific Category Glow Highlights on Map */
.selectable-room.toilet-highlighted {
  fill: rgba(13, 148, 136, 0.45) !important;
  stroke: #0d9488 !important;
  stroke-width: 4.5px !important;
  filter: drop-shadow(0 0 10px rgba(13, 148, 136, 0.90)) !important;
  animation: toiletPulse 1.3s ease-in-out infinite alternate !important;
}

@keyframes toiletPulse {
  0% {
    fill: rgba(13, 148, 136, 0.35);
    stroke-width: 3.5px;
    filter: drop-shadow(0 0 6px rgba(13, 148, 136, 0.6));
  }
  100% {
    fill: rgba(13, 148, 136, 0.65);
    stroke-width: 5.5px;
    filter: drop-shadow(0 0 14px rgba(13, 148, 136, 1));
  }
}

.selectable-room.lab-highlighted {
  fill: rgba(225, 29, 72, 0.45) !important;
  stroke: #e11d48 !important;
  stroke-width: 4.5px !important;
  filter: drop-shadow(0 0 10px rgba(225, 29, 72, 0.90)) !important;
  animation: labPulse 1.3s ease-in-out infinite alternate !important;
}

@keyframes labPulse {
  0% {
    fill: rgba(225, 29, 72, 0.35);
    stroke-width: 3.5px;
    filter: drop-shadow(0 0 6px rgba(225, 29, 72, 0.6));
  }
  100% {
    fill: rgba(225, 29, 72, 0.65);
    stroke-width: 5.5px;
    filter: drop-shadow(0 0 14px rgba(225, 29, 72, 1));
  }
}

.selectable-room.office-highlighted {
  fill: rgba(37, 99, 235, 0.45) !important;
  stroke: #2563eb !important;
  stroke-width: 4.5px !important;
  filter: drop-shadow(0 0 10px rgba(37, 99, 235, 0.90)) !important;
  animation: officePulse 1.3s ease-in-out infinite alternate !important;
}

@keyframes officePulse {
  0% {
    fill: rgba(37, 99, 235, 0.35);
    stroke-width: 3.5px;
    filter: drop-shadow(0 0 6px rgba(37, 99, 235, 0.6));
  }
  100% {
    fill: rgba(37, 99, 235, 0.65);
    stroke-width: 5.5px;
    filter: drop-shadow(0 0 14px rgba(37, 99, 235, 1));
  }
}

.selectable-room.classroom-highlighted {
  fill: rgba(147, 51, 234, 0.45) !important;
  stroke: #9333ea !important;
  stroke-width: 4.5px !important;
  filter: drop-shadow(0 0 10px rgba(147, 51, 234, 0.90)) !important;
  animation: classroomPulse 1.3s ease-in-out infinite alternate !important;
}

@keyframes classroomPulse {
  0% {
    fill: rgba(147, 51, 234, 0.35);
    stroke-width: 3.5px;
    filter: drop-shadow(0 0 6px rgba(147, 51, 234, 0.6));
  }
  100% {
    fill: rgba(147, 51, 234, 0.65);
    stroke-width: 5.5px;
    filter: drop-shadow(0 0 14px rgba(147, 51, 234, 1));
  }
}

.selectable-room.hall-highlighted {
  fill: rgba(217, 119, 6, 0.45) !important;
  stroke: #d97706 !important;
  stroke-width: 4.5px !important;
  filter: drop-shadow(0 0 10px rgba(217, 119, 6, 0.90)) !important;
  animation: hallPulse 1.3s ease-in-out infinite alternate !important;
}

@keyframes hallPulse {
  0% {
    fill: rgba(217, 119, 6, 0.35);
    stroke-width: 3.5px;
    filter: drop-shadow(0 0 6px rgba(217, 119, 6, 0.6));
  }
  100% {
    fill: rgba(217, 119, 6, 0.65);
    stroke-width: 5.5px;
    filter: drop-shadow(0 0 14px rgba(217, 119, 6, 1));
  }
}

.selectable-room.stairs-highlighted {
  fill: rgba(22, 163, 74, 0.45) !important;
  stroke: #16a34a !important;
  stroke-width: 4.5px !important;
  filter: drop-shadow(0 0 10px rgba(22, 163, 74, 0.90)) !important;
  animation: stairsPulse 1.3s ease-in-out infinite alternate !important;
}

@keyframes stairsPulse {
  0% {
    fill: rgba(22, 163, 74, 0.35);
    stroke-width: 3.5px;
    filter: drop-shadow(0 0 6px rgba(22, 163, 74, 0.6));
  }
  100% {
    fill: rgba(22, 163, 74, 0.65);
    stroke-width: 5.5px;
    filter: drop-shadow(0 0 14px rgba(22, 163, 74, 1));
  }
}

.selectable-room:focus-visible {
  outline: none;
  stroke: #2563eb;
  stroke-width: 3.5px;
}

/* ── GPS Live Marker (SVG) ──────────────────────────────────── */
.gps-marker {
  pointer-events: none;
  transition: transform 0.4s cubic-bezier(0.2, 0.9, 0.3, 1);
}

.gps-accuracy-ring {
  fill: rgba(37, 99, 235, 0.14);
  stroke: rgba(37, 99, 235, 0.35);
  stroke-width: 1.5;
  transition: r 0.4s ease;
}

.gps-pulse-ring {
  fill: #1a73e8;
  opacity: 0.45;
  animation: gpsPulse 2.2s cubic-bezier(0.2, 0.8, 0.4, 1) infinite;
  transform-origin: 0 0;
}

@keyframes gpsPulse {
  0%   { transform: scale(1);   opacity: 0.55;  }
  60%  { transform: scale(2.6); opacity: 0.12; }
  100% { transform: scale(3.4); opacity: 0;    }
}

.gps-heading-cone {
  transition: transform 0.3s cubic-bezier(0.2, 0.9, 0.3, 1);
  transform-origin: 0 0;
}

.gps-arrow      { fill: #1a73e8; }
.gps-pin-shadow { fill: rgba(15, 23, 42, 0.28); }
.gps-pin-outer  { fill: #ffffff; }
.gps-pin-inner  { fill: #1a73e8; }
.gps-pin-center { display: none; }

/* ── Initial Floor Prompt Modal ─────────────────────────────── */
.floor-prompt-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background-color: var(--bg-color);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.floor-prompt-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  box-shadow: 0 20px 50px -10px rgba(0, 0, 0, 0.20), 0 8px 16px -4px rgba(0, 0, 0, 0.08);
  padding: 2.25rem 2rem;
  max-width: 440px;
  width: 100%;
  text-align: center;
}

.floor-prompt-header {
  margin-bottom: 1.75rem;
}

.floor-prompt-question {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.brand-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.floor-prompt-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.floor-prompt-btn {
  background: var(--input-bg);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 14px 20px;
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  align-items: center;
  justify-content: center;
}

.floor-prompt-btn:hover {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  border-color: var(--btn-primary-bg);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.floor-prompt-btn:active {
  transform: translateY(0);
}

.floor-prompt-btn:focus-visible {
  outline: 2px solid #2563eb;
  outline-offset: 2px;
}

/* ── Responsive Mobile Optimizations ────────────────────────── */
@media (max-width: 480px) {
  .floating-top-bar {
    padding-top: 10px;
    padding-top: max(10px, env(safe-area-inset-top));
    padding-left: 10px;
    padding-right: 10px;
    gap: 8px;
  }

  .floating-search-bar {
    padding: 10px 14px;
  }

  .classroom-search-input {
    font-size: 15px;
  }

  .floor-chip,
  .category-chip {
    padding: 6px 12px 6px 6px;
    font-size: 12.5px;
  }

  .chip-badge {
    width: 24px;
    height: 24px;
  }

  .nav-arrow-btn {
    width: 46px;
    height: 46px;
    border-radius: 16px;
  }

  .nav-fab {
    bottom: 16px;
    right: 12px;
  }

  .map-zoom-controls {
    bottom: 16px;
    left: 12px;
  }

  .nav-control-group {
    flex-wrap: wrap;
    border-radius: 14px;
    padding: 8px;
    gap: 6px;
  }

  .nav-select-wrapper {
    flex: 1 1 100%;
  }

  .nav-suggestions-dropdown {
    min-width: 0;
    max-width: 100%;
    left: 0;
    right: 0;
  }

  .nav-swap-btn {
    display: none;
  }

  .nav-add-stop-btn {
    display: flex;
  }

  .nav-btn {
    flex: 1;
    padding: 8px 12px;
    text-align: center;
  }
}

/* ── Room Details Popup Message Modal ───────────────────────── */
.room-details-popup {
  position: absolute;
  bottom: 80px;
  left: 12px;
  right: 12px;
  z-index: 55;
  pointer-events: none;
  animation: popupSlideUp 0.24s cubic-bezier(0.16, 1, 0.3, 1);
  max-width: 440px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .room-details-popup {
    left: 20px;
    right: auto;
    bottom: 88px;
    width: 380px;
    max-width: calc(100vw - 40px);
    margin: 0;
  }
}

@keyframes popupSlideUp {
  from {
    transform: translateY(16px) scale(0.97);
    opacity: 0;
  }
  to {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
}

.room-popup-card {
  pointer-events: auto;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.16), 0 4px 12px rgba(0, 0, 0, 0.08);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.room-popup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.room-popup-badge-group {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.room-popup-icon {
  font-size: 18px;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--card-bg-subtle);
  border: 1px solid var(--border-color);
}

.room-popup-floor-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--card-bg-subtle);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
}

.room-popup-floor-badge.floor-ground {
  background: #dbeafe;
  color: #1d4ed8;
  border-color: rgba(29, 78, 216, 0.25);
}
.room-popup-floor-badge.floor-first {
  background: #e0e7ff;
  color: #4338ca;
  border-color: rgba(67, 56, 202, 0.25);
}
.room-popup-floor-badge.floor-second {
  background: #f3e8ff;
  color: #7e22ce;
  border-color: rgba(126, 34, 206, 0.25);
}
.room-popup-floor-badge.floor-third {
  background: #fce7f3;
  color: #be185d;
  border-color: rgba(190, 24, 93, 0.25);
}

.room-popup-category-badge {
  font-size: 11.5px;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 9999px;
  background: var(--card-bg-subtle);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
}

.room-popup-close-btn {
  background: transparent;
  border: none;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  color: var(--text-muted);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.room-popup-close-btn:hover {
  background: var(--card-bg-subtle);
  color: var(--text-main);
}

.room-popup-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.room-popup-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin: 0;
}

.room-popup-meta-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.room-popup-code-badge {
  font-size: 12px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 6px;
  background: var(--card-bg-subtle);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.room-popup-floor-name {
  font-weight: 500;
}

.room-popup-footer {
  margin-top: 2px;
}

.room-popup-nav-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  background: var(--btn-primary-bg, #2563eb);
  color: #ffffff;
  border: none;
  border-radius: 14px;
  padding: 12px 18px;
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.32);
  transition: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
}

.room-popup-nav-btn:hover {
  background: var(--btn-primary-hover, #1d4ed8);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.4);
}

.room-popup-nav-btn:active {
  transform: translateY(0);
}

/* ── Legacy Selectors (for JS backwards compatibility) ───────── */
.container        { display: contents; }
.header           { display: none !important; }
.header-top-row   { display: none !important; }
.theme-switcher   { display: none !important; }
.floor-switcher   { display: none !important; }
.gps-btn-text     { display: none !important; }
.gps-status-dot   { display: none !important; }